operation

a business especially one run on a large scale

• “a large-scale farming operation”
• “a multinational operation”
• “they paid taxes on every stage of the operation”
• “they had to consolidate their operations”

a planned activity involving many people performing various actions

• “they organized a rescue operation”
• “the biggest police operation in French history”
• “running a restaurant is quite an operation”
• “consolidate the companies various operations”

a process or series of acts especially of a practical or mechanical nature involved in a particular form of work

• “the operations in building a house”
• “certain machine tool operations”

the state of being in effect or being operative

• “that rule is no longer in operation”

a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body

• “they will schedule the operation as soon as an operating room is available”
• “he died while undergoing surgery”

activity by a military or naval force (as a maneuver or campaign)

• “it was a joint operation of the navy and air force”

(computer science) data processing in which the result is completely specified by a rule (especially the processing that results from a single instruction)

• “it can perform millions of operations per second”

process or manner of functioning or operating

• “the power of its engine determine its operation”
• “the plane”
• “;”
• “;”
• “s performance conformed to high standards”

(mathematics) calculation by mathematical methods

• “the problems at the end of the chapter demonstrated the mathematical processes involved in the derivation”
• “they were learning the basic operations of arithmetic”

(psychology) the performance of some composite cognitive activity; an operation that affects mental contents

• “the process of thinking”
• “the cognitive operation of remembering”

the activity of operating something (a machine or business etc.)

• “her smooth operation of the vehicle gave us a surprisingly comfortable ride”